1818291829109 has 16 divisors (see below), whose sum is σ = 2174610950400. Its totient is φ = 1486501822080.

The previous prime is 1818291829103. The next prime is 1818291829127. The reversal of 1818291829109 is 9019281928181.

It is a cyclic number.

It is not a de Polignac number, because 1818291829109 - 2²⁸ = 1818023393653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818291829103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16123952 + ... + 16236329.

It is an arithmetic number, because the mean of its divisors is an integer number (135913184400).

Almost surely, 2^{1818291829109} is an apocalyptic number.

It is an amenable number.

1818291829109 is a deficient number, since it is larger than the sum of its proper divisors (356319121291).

1818291829109 is a wasteful number, since it uses less digits than its factorization.

1818291829109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32360660.

The product of its (nonzero) digits is 1492992, while the sum is 59.

The spelling of 1818291829109 in words is "one trillion, eight hundred eighteen billion, two hundred ninety-one million, eight hundred twenty-nine thousand, one hundred nine".